DTC P0012-00: CMP Timing Over-Retarded: Notes

DTC P0012:00 DETECTION CONDITION AND POSSIBLE CAUSE

DTC P0012:00	CMP timing over-retarded
DETECTION CONDITION	The actual valve timing is over-retarded by 10° from the target valve timing for 5 s when the oil control valve (OCV) system control is within the feedback range. MONITORING CONDITIONS Engine speed: below 4, 000 RPM ECT: 70-110°C {158-230°F} Diagnostic support note This is a continuous monitor (CCM). The check engine light illuminates if the PCM detects the above malfunction condition in two consecutive drive cycles or in one drive cycle while the DTC for the same malfunction has been stored in the PCM. PENDING CODE is available if the PCM detects the above malfunction condition during first drive cycle. FREEZE FRAME DATA (Mode 2)/Snapshot data is available. The DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION	Performs the variable valve timing control with a maximum cam retard request.
POSSIBLE CAUSE	Low engine oil pressure Loose timing chain or improper valve timing due to timing chain slippage OCV malfunction Spool valve in OCV is stuck in retard position Following engine oil runners are clogged or have leakage: Between oil pressure switch and OCV Between OCV and variable valve timing actuator In variable valve timing actuator PCM malfunction
SYSTEM WIRING DIAGRAM	-